While it’s definitely more important to have some raw talent in your crew, having someone that injects a bit of good natured tom-foolery and/or fuckwittery can also work wonders. Whether it be getting loose at the apres bar, being the joker or being a hippy like Nicolas Müller, people want to see interesting characters.
Think about what LNP does for the Deja Vu crew for example. He has a mean beard, is one funny dude and dresses a bit like a pirate. People dig pirates.